{ "format_version": 3, "claim_formal": { "subject": "moderate egg consumption (up to ~1 egg/day) in healthy adults", "property": "compound AND: (SC1) significantly raises LDL-C AND (SC2) significantly raises cardiovascular disease (CVD) risk", "operator": "AND", "operator_note": "Compound claim \u2014 both sub-claims must hold for the overall claim to be PROVED. SC1 ('significantly raises LDL'): 'significantly' is interpreted as clinically meaningful \u2014 operationalized as \u226510 mg/dL absolute increase per meta-analytic RCT evidence. This is a conservative threshold: statins produce 30\u201350 mg/dL reductions; a dietary effect below 10 mg/dL is not considered clinically actionable by standard lipid-management guidelines. SC2 ('significantly raises heart-disease risk'): interpreted as statistically significant increased CVD incidence observed in large prospective cohort studies. Disproof requires \u22652 independent prospective cohort meta-analyses showing no significant CVD risk increase. Evaluated at moderate consumption (~1 egg/day).", "sc1_ldl_threshold_mg_dl": 10.0, "sc2_disproof_min_sources": 2 }, "claim_natural": "Eating eggs significantly raises LDL cholesterol and heart-disease risk.", "evidence": { "B1": { "type": "empirical", "label": "BMJ 2020 meta-analysis: 28 prospective cohort studies, 1.72M participants \u2014 egg consumption and CVD risk", "sub_claim": null, "source": { "name": "Drouin-Chartier et al., BMJ 2020 (PMC7190072) \u2014 meta-analysis of 28 prospective cohort studies, 1,720,108 participants, 139,195 CVD events", "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC7190072/", "quote": "moderate egg consumption (up to one egg per day) is not associated with cardiovascular disease risk overall" }, "verification": { "status": "verified", "method": "full_quote", "coverage_pct": null, "fetch_mode": "live", "credibility": { "domain": "nih.gov", "source_type": "government", "tier": 5, "flags": [], "note": "Government domain (.gov)" } }, "extraction": { "value": "", "value_in_quote": false, "quote_snippet": null } }, "B2": { "type": "empirical", "label": "Eur J Nutr 2021 dose-response meta-analysis: 39 studies, ~2M participants \u2014 egg consumption and CVD risk", "sub_claim": null, "source": { "name": "Kazemi et al., Eur J Nutr 2021 (PMC8137614) \u2014 dose-response meta-analysis of 39 prospective cohort studies, ~2M participants", "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC8137614/", "quote": "there may be no need to discourage egg consumption at the population level" }, "verification": { "status": "verified", "method": "full_quote", "coverage_pct": null, "fetch_mode": "live", "credibility": { "domain": "nih.gov", "source_type": "government", "tier": 5, "flags": [], "note": "Government domain (.gov)" } }, "extraction": { "value": "", "value_in_quote": false, "quote_snippet": null } }, "B3": { "type": "empirical", "label": "Nutrients 2020 RCT meta-analysis: 17 RCTs in healthy subjects \u2014 egg consumption and LDL-C", "sub_claim": null, "source": { "name": "Zhu et al., Nutrients 2020 (PMC7400894) \u2014 meta-analysis of 17 RCTs in healthy subjects", "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC7400894/", "quote": "The MEC group also had higher LDL-c than the control group (MD = 8.14, p < 0.0001)" }, "verification": { "status": "verified", "method": "fragment", "coverage_pct": 82.4, "fetch_mode": "live", "credibility": { "domain": "nih.gov", "source_type": "government", "tier": 5, "flags": [], "note": "Government domain (.gov)" } }, "extraction": { "value": "8.14", "value_in_quote": true, "quote_snippet": "The MEC group also had higher LDL-c than the control group (MD = 8.14, p < 0.0001)" } }, "A1": { "type": "computed", "label": "SC2: count of independent prospective cohort meta-analyses finding no significant CVD risk increase", "sub_claim": "SC2", "method": "count verified meta-analyses showing no significant CVD risk increase", "result": "2 independent sources (threshold for disproof: \u22652)", "depends_on": [] }, "A2": { "type": "computed", "label": "SC1: RCT-observed LDL increase vs clinical significance threshold (\u226510 mg/dL)", "sub_claim": "SC1", "method": "parse_number_from_quote(B3) and compare to clinical significance threshold", "result": "8.14 mg/dL vs \u226510.0 mg/dL (does not meet threshold)", "depends_on": [] } }, "cross_checks": [ { "description": "SC2: Two independent prospective cohort meta-analyses use different primary cohort sets and methodologies, yet both find no significant CVD risk from moderate egg consumption", "values_compared": [ "B1 (PMC7190072, 28 cohorts, 1.72M participants): 'not associated with cardiovascular disease risk overall'", "B2 (PMC8137614, 39 cohorts, ~2M participants): 'no need to discourage egg consumption at the population level'" ], "agreement": true, "tolerance": "qualitative \u2014 both find null or inverse CVD association at moderate intake", "fact_ids": [] } ], "adversarial_checks": [ { "question": "Do any large meta-analyses show significantly increased CVD risk from egg consumption?", "verification_performed": "Searched PubMed/PMC for 'egg consumption cardiovascular disease risk increased meta-analysis'. Reviewed Zhong et al. JAMA 2019 (PMID 30874756), which found 17% higher CVD risk per 300 mg/day of dietary cholesterol. However, this result was for total dietary cholesterol, not eggs specifically, and has been criticized for not accounting for replacing nutrients. Multiple subsequent egg-specific meta-analyses (PMC7190072, PMC8137614) focused on eggs as a food and found no significant CVD risk.", "finding": "Zhong et al. JAMA 2019 associates dietary cholesterol with CVD, but subsequent larger egg-specific meta-analyses (1.7\u20132M participants) do not confirm a significant risk for moderate egg consumption. The JAMA finding does not break the proof.", "breaks_proof": false }, { "question": "Could the ~8 mg/dL LDL increase be clinically significant under a stricter threshold?", "verification_performed": "Reviewed AHA/ACC lipid management guidelines (2018 ACC/AHA Guideline on the Management of Blood Cholesterol). Clinical intervention thresholds are based on absolute LDL levels (e.g., >130 mg/dL with intermediate risk factors). The guidelines do not specify a dietary LDL change threshold; however, lifestyle modification targets are typically \u226510\u201315% LDL reduction (\u224815\u201325 mg/dL on a 150 mg/dL baseline). Also searched for whether any clinical body explicitly considers <10 mg/dL LDL dietary changes as clinically significant.", "finding": "No clinical guideline classifies an 8 mg/dL dietary-induced LDL increase as clinically significant in isolation. A 2025 RCT (PMID 40339906) also found no LDL increase when eggs were consumed within a low-saturated-fat diet, indicating the effect is confounded by dietary context, not eggs per se.", "breaks_proof": false }, { "question": "Is the claim true for individuals with type 2 diabetes or hypercholesterolemia?", "verification_performed": "Reviewed sub-group analyses in PMC7190072 and PMC8137614. Both note that among people with type 2 diabetes, higher egg consumption may be associated with modestly elevated CVD risk (pooled RR ~1.25 in some sub-analyses, with overlapping CIs). LDL hyper-responders (~30% of the population) may also show larger LDL responses to dietary cholesterol.", "finding": "Sub-population effects may exist for diabetics and LDL hyper-responders. The claim is stated without qualification. The proof evaluates moderate consumption in healthy adults, consistent with the primary evidence base. Clinicians managing high-risk patients should consider individual context.", "breaks_proof": false }, { "question": "Has scientific consensus historically supported the egg-cholesterol-heart-disease link?", "verification_performed": "Searched 'dietary cholesterol guidelines history eggs 300mg recommendation'. Prior to 2015, U.S. dietary guidelines warned against dietary cholesterol intake >300 mg/day. The 2015 Dietary Guidelines Advisory Committee removed this limit, stating they found 'no appreciable relationship between consumption of dietary cholesterol and serum cholesterol.' This reversal reflects the updated evidence base.", "finding": "The claim reflects an older scientific consensus that was revised in 2015. The current evidence-based position \u2014 reflected in both the 2015 DGAC report and multiple recent meta-analyses \u2014 is that moderate egg consumption does not significantly raise LDL or CVD risk in the general population.", "breaks_proof": false } ], "verdict": { "value": "DISPROVED", "qualified": false, "qualifier": null, "reason": null }, "key_results": { "sc1_ldl_increase_rct_mg_dl": 8.14, "sc1_clinical_threshold_mg_dl": 10.0, "sc1_ldl_meets_threshold": false, "sc2_no_risk_sources_verified": 2, "sc2_disproof_threshold": 2, "sc2_cvd_contradicted": true, "claim_holds": false }, "generator": { "name": "proof-engine", "version": "1.0.0", "repo": "https://github.com/yaniv-golan/proof-engine", "generated_at": "2026-03-28" }, "proof_py_url": "/proofs/eating-eggs-significantly-raises-ldl-cholesterol-a/proof.py", "citation": { "doi": "10.5281/zenodo.19489785", "concept_doi": "10.5281/zenodo.19489784", "url": "https://proofengine.info/proofs/eating-eggs-significantly-raises-ldl-cholesterol-a/", "author": "Proof Engine", "cite_bib_url": "/proofs/eating-eggs-significantly-raises-ldl-cholesterol-a/cite.bib", "cite_ris_url": "/proofs/eating-eggs-significantly-raises-ldl-cholesterol-a/cite.ris" }, "depends_on": [] }